Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 187

5 PARAMETER SETTINGS
5 - 36
POINT
When B/W points less than the following are set in [Device] under [PLC parameter],
set refresh parameters accordingly. Or, increase the B/W points to the following
value or more in [Device].
No. of modules
1
2
3
4
(b) Basic model QCPU
Link devices are assigned as shown below.
Installation
location
Number
of installation
to
1 Module
07FF
POINT
When B/W points set in [Device] under [PLC parameter] are less than 2K points,
set refresh parameters accordingly. Or, increase the B/W points to 2K points or
more in [Device].
Device points in [Device]
B
8K points
8K points
6K points
8K points
CPU Module 1
B/W LB/LW
0
2048
points
MELSEC-Q
W
8K points
8K points
6K points
8K points
0
to
07FF
5 - 36